Insertable joint



Aug. 9, 11938..

J. R, DE HART INSERTABLE JOINT Filed May 24, 1938 -f/rf Patented Aug. 9,1938 UNITED STATES PATENT orrlce INSERTABLE JOINT Application May 24,

3 Claims.

This invention relates to new and useful improvements in insertablejoints and more particularly to insertable joints for soil pipes and thelike.

In standard soil pipes of conventional construction, when it is desiredto insert one or more sections into `the soil pipe, it is essential thata section be cut from the soil pipe which is approximately one to twoinches longer than the combined length of the section or sections to beinserted in order to provide sufficient clearance to permit the newsection or sections to be swung or inserted into the line. Thus when thesections are properly positioned in the line and nested in the hubportions of adjacent sections of soil pipe, a substantial gap or spaceexists between the lower end of the upper fixed section of the pipe andthe upper end of the section inserted. The existence or" this gap orspace is objectionable in that it aords -a recess or oiset in the wallof the soil pipe in which matter readily collects, and also the packingemployed to fill the hubs and provide a water-tight connection betweenadjacent sections quite often enters this space or gap with the resultthat a substantial obstruction or restriction results in the soil pipe.

With these observations in mind, the principal object of the presentinvention is to provide an insertable joint or section which isconstructed and arranged to provide a continuous wall surface in thesoil pipe whereby the occurrence of any space or gap between adjacentjoints or sections therein is entirely eliminated.

Another object of the invention is to provide an insertable joint orsection of the character set forth which is of relatively simple,inexpensive construction and comparatively easy to install.

These and other objects of the invention and the features and details oithe construction and operation thereof are hereinafter iully set forthand shown in the accompanying drawing, in which:

Figure 1 is a fragmentary View in section longitudinally through a soilpipe including an insertable joint constructed according to the presentinvention.

Figure 2 is a View similar to Figure 1 showing the manner in which ajoint embodying the invention may be inserted.

Figure 3 is a fragmentary view in perspective of the main body portionci the insertable joint section, and

Figure 4 is a view in perspective of Ia complementary member constructedfor cooperative 1938, Serial lNo. 209,791

association with the section disclosed in Figure 3.

Referring now more particularly to the drawing reference numeral ldesignates a soil pipe which may be of any desired height and connectedin any desired manner with the various fittings of a building. Undercertain circumstances, it may be and often is desired to add a newsection to the soil pipe at some convenient point, as for instance,section 2 which is a branch section of pipe designed to present anauxiliary opening.

When it is desired to put in a new section, such as section 2, it isnecessary to remove one or more of the sections of the soil pipe and insuch removal the particular section or sections are broken or cut awayto make room for s-aid new section. The `new section 2 is then insertedin the conventional manner after which an inserted joint section 3 isinserted with its lower end 4 fitted into the bell or hub 5 of section 2while its upper end is provided with threads 6 for receiving theinternally threaded section 'i ci the sleeve or hub member 8.

Prior to the present invention, in order to permit a new section 2 andjoint section 3 to be inserted in the soil pipe, a section of from oneto two inches longer than the combined length of said sections 2 and 3was necessarily cut from the soil pipe in order to provide suicientclearance for the latter section 3 to be swung into the soil pipe line.This requirement, of course, caused a substantial space or gap to occurbetween the upper end of the section 3 and to lower end of thesuperimposed section 5l when the lower ends of sections 2 and 3 werefitted into the hub portions I0 and 5 of sections I l and 2respectively.

According to the present invention this space may be eliminated and atthe same time a proper support for the section 9 and others above it byforming theinserted joint section 3 to include an approximatelysemi-circular upper end portion i2 above or beyond the threads 6thereon. By this arrangement the section 3 may be inserted and swunginto the soil pipe line in the manner shown in Figure 2 of the drawingwithin an opening or space in said soil pipe line of the same length asthat of the sections to be inserted. Thus no space or gap will occurbetween the upper end of the semi-circular portion l2 of the insertedsection 3 and the lower end of the superimposed section 9 of the linewith the result that adequate support for the latter and other sectionsabove it is provided by said portion I2 of section 3, and the priornecessity for removing a section from the line of greater length thanthe section or sections to be inserted no longer exists.

A space or gap will, however, exist between the inserted section 3 andthe section 9 which is not occupied by the semi-circular portion I2 ofsaid section 3 and this gap or space in the wall of the soil pipe isfilled by a complementary approximately semi-circular insert section orsegment I3 constructed as shown in Figure 4 of the drawing.

The approximately semi-circular projecting portion I2 of the section 3and the complementary insert section or segment I3 are generally formedby initially forming the inserted section 3 with a continuous wall ofuniform length and then cutting or otherwise removing the said insertsegment I3 therefrom to form it and also the projecting portion I2 Whichis left integral with section 3. These several elements may, however, beformed independently of each other as desired.

In order to hold the insert segment I3 in position in the soil pipe withrespect to the projecting portion I2 of section 3 during calking orpacking of the joints as well as tightening of the hub or sleeve 8 uponthe threads 6 of said section 3, tapered lugs or projections I4 areprovided at opposite side edges of the projecting portion I2 andarranged to accurately fit or engage correspondingly formed recesses orslots I5 provided in the side edges of the insert segment I3 in themanner shown in the drawing.

After the sections 2 and 3 and the complementary segment I3 of thelatter have been positioned as above described, the sleeve or hub 8 isscrewed into position as illustrated in Figure 1, the several jointsbeing made water tight and secure by inserting caulking or packing inthe several hub portions thereof in the conventional manner, and While aparticular embodiment of the invention has been illustrated anddescribed, it is not intended that said invention shall be limitedthereto but that changes and modifications may be embodied andincorporated therein within the scope of the annexed claims.

I claim:

1. An insertable joint for soil pipes and the like comprising a sectionof pipe having threads thereon adjacent the upper end and including anarcuate wall portion extending a substantial distance endwise beyondsaid threads for supporting superimposed pipe sections, an arcuateinsert section arranged for cooperative association With said pipesection and the endwise extending Wall portion thereof to complete thewall of the pipe section, and a hub for said section having at the lowerend thereof an internally threaded portion adapted to be screwed ontothe threads on said pipe section.

2. An insertable joint for soil pipes and the like comprising a sectionof pipe having threads thereon adjacent the upper end and including anarcuate wall portion extending a substantial distance endwise beyondsaid threads for supporting superimposed pipe sections, an arcuateinsert section arranged for cooperative association with said pipesection and the endwise extending v/all portion thereof to complete thewall of the pipe section, a hub for said section having at the lower endthereof an internally threaded portion adapted to be screwed onto thethreads on said pipe section, and means on said arcuate insert sectionand the endwise extending wall portion of the pipe section arranged forcooperative interengagement to hold the arcuate insert section in placeuntil said hub is screwed into position upon said pipe section.

3. An insertable joint for soil pipes and the like comprising a sectionof pipe having threads thereon adjacent the upper end and including anarcuate wall portion extending a substantial distance endwise beyondsaid threads for supporting superimposed pipe sections, an arcuateinsert section arranged for cooperative association with said pipesection and the endwise extending Wall portion thereof to complete theWall of the pipe section, said insert section having recesses in itsopposite side edges, a hub for said section having at the lower endthereof an internally threaded portion adapted to be screwed onto thethreads on said pipe section, and projections on the endwise extendingarcuate wall portion of the pipe section arranged to engage the recessesin the arcuate insert section to hold the latter in place until said hubis screwed into position upon said pipe section.

JOHN R. DE HART.

